Question
The sum of the first n terms of a series is $\frac{n(n+1)(n+2)}{3}$. The 12 th term of the series is(a) 182(b) 122(c) 109(d) 156
Step 1
Step 1: The sum of the first n terms of a series is given by $\frac{n(n+1)(n+2)}{3}$. Show more…
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